Several typical interface methods to improve the anti-interference ability of pulse interface of AC servo system

Because the AC servo motor driver adopts high-speed optocoupler for pulse command and direction control input. In order to enhance its anti-interference and improve working reliability, it is recommended to use the following wiring methods for pulse command and direction control input.

(1) Using differential signal input mode

This method has the best anti-interference ability and is suitable for higher operating frequencies.

(2) The recommended connection method when the controller is in the form of open-collector output

(3) Recommended connection method when the controller is in the form of emitter follower output

image 3

Note: When VC=24V, R=1.2K～1.8K. When VC=12V, R=510.